直流杂散电流干扰缓解方法及其适用性  

Mitigation methods and their applicability for DC stray current interference

作　　者：李伟[1] 杜艳霞[1] 王洁军[1] 

机构地区：[1]北京科技大学新材料技术研究院,北京100083

出　　处：《工程科学学报》2016年第7期958-966,共9页Chinese Journal of Engineering

基　　金：国家自然科学基金资助项目(51401017);中央高校基本科研业务费资助项目(FRF-TP--15--049A3)

摘　　要：通过室内模拟试验装置,研究源于强制电流阴极保护系统的直流杂散电流对外部无阴极保护管道干扰的缓解方法,包括跨接电阻法、牺牲阳极法和金属屏蔽线法.文中主要考察跨接电阻、牺牲阳极位置和材质、金属屏蔽线位置和连接方式等对不同干扰类型的缓解效果和规律,讨论不同缓解方法的适用性,并对不同干扰类型提出推荐方法及适用条件,可为实际工程应用提供借鉴.Through indoor simulated experimental equipment,mitigation methods which contained the bond resistor method,galvanic anode method and metallic shield method were studied to mitigate DC stray current interference caused by the impressed current cathodic protection system on pipelines without cathodic protection at the external. The influences of bond resistance,galvanic anode location and materials,metallic shield location and connecting methods on the mitigation and regularity for different types of interference were investigated,and the applicability for different mitigation methods was also analyzed. In addition,it can also provide reference for practical engineering with putting forward recommendations and application conditions for different types of interference.

关 键 词：埋地管道 阴极保护 杂散电流 缓蚀 

分 类 号：TG172.84[金属学及工艺—金属表面处理]